See also:

Cleaning the display
Before cleaning the display, make sure that it is switched off and has cooled down. Clean the display surface using a commercially-available microfiber cloth and TFT/LCD display cleaner. ...

Checking the battery
Press the or button. The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is discha ...

Time/date
This submenu is only available on vehicles with Audio 20. To set the time and the date for vehicles with COMAND, see the separate operating instructions. In the Time/date submenu, you can set the t ...